Alen BreatheSmart FLEX True HEPA Air Purifier



Filter: HEPA-Pure/Fresh/OdorCell/HEPA-Heavy Smoke

  • Cleans 700 SqFt Every 30 Minutes

    Enjoy top-rated Alen purification at an incredible value. Our most popular air purifier for commercial use is perfectly sized for medium-sized rooms, apartments or condos, and bedrooms. From gyms to doctor’s offices to animal shelters, the FLEX offers flexible options for any air quality concerns.

  • Customized For Concern

    Our long-lasting antimicrobial True HEPA (H13) filters cover all major concerns: Allergies, dust, mold, bacteria, and VOCs, plus odors from cooking, pets, diapers, and sweaty apparel. Alen’s proprietary antimicrobial treatment kills bacteria and inhibits mold and fungi, while our exclusive nontoxic odor-eliminating technology destroys unwanted smells at the molecular level.

  • Lifetime Peace Of


    When you purchase an Alen air purifier, we proudly support it with the industry’s first and only lifetime warranty. If anything goes wrong, our in-house experts will help you solve the problem. If they can’t, we’ll happily ship you a free replacement—fast!

  • Discover Better


    Proven to improve sleep and reduce allergies, the BreatheSmart FLEX helped people fall asleep faster, sleep sounder, and wake feeling more refreshed in a peer-reviewed study by SleepScore Labs. FLEX is incredibly quiet and perfectly tuned to generate soothing pink noise—for up to 25% better sleep. And at bedtime, display lighting darkens with one touch.

  • Tailored To You

    Personalize your Alen purifier with a selection of designer panel colors to fit any room and compliment your decor for today or whenever your styles change. Browse exclusive colors, woodgrains, and metallics on our designer panel page.

Product Description


Experience Alen’s world-class air cleaning performance at an incredible value. The FLEX quietly purifies up to 700 SqFt of air every 30 minutes, removing 99.97% of airborne dust, allergens, and other contaminants. Proven to improve sleep, FLEX helped allergy sufferers fall asleep faster and wake refreshed in a study by SleepScore Labs. And people love its FLEXible customization options.

  •      · Tailored to You– True HEPA filter options for unique concerns plus designer panels
  •      · Whisper Quiet- Tuned to produce soothing pink noise for 25% better sleep
  •      · SleepScore Validated– A proven path to better sleep and fewer nighttime allergies
  •      · Guaranteed Forever- Lifetime peace of mind from the industry’s best warranty






Filtration Rate


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Cubic Feet Per Minute



Clean Air Deliver Rate



Filter Life


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Energy Star



Up to 700 sq. ft. (65.03 m2) | Cleans all air in room every 30 minutes @ highest setting



Removes 99.97% of particles greater than 0.3 microns

Lowest Speed 39 dBa | Highest Speed 55 dBa

Pink Noise | All speeds




Speed 1: 53 CFM | Speed 2: 135 CFM | Speed 3: 147 CFM | Turbo: 187 CFM


12 months | @ Recommended 24hr/day operation


0 PPM when disengaged, less than 0.001 PPM with optional ionizer engaged

220 AV, 50HZ (3 Prong Power Cord)

6ft 4inches (193cm)

8 to 56 watts



H 25" (63.50 cm) x W 15" (38.10 cm) x D 8.5" (21.59 cm)


16 lbs (6.8 kg)

Lifetime | with Product Registration & Active Filter Subscription

What's In The Box

BreatheSmart FLEX Air Purifier

FLEX True HEPA filter

Designer panel (optional)

Quick start guide